| Description of elements in the header | |
|---|---|
| m_ss | amount of monthly sunshine duration |
| m_sx | the maximum sunshine duration in the month |
| m_sxd | the day with the maximum sunshine duration |
| m_dsf20 | number of days when the sunshine duration is less than 20 % of the astronomic sunshine duration |
| m_dsf80 | number of days when the sunshine duration is more than 80 % of the astronomic sunshine duration |
| 1969. | m_ss | m_sx | m_sxd | m_dsf20 | m_dsf80 |
|---|---|---|---|---|---|
| January | 32.9 | 7.5 | 1969-01-31 | 25 | 0 |
| February | 45.6 | 7.2 | 1969-02-10 | 21 | 0 |
| March | 101.8 | 10.1 | 1969-03-09 | 16 | 2 |
| April | 212.2 | 12.6 | 1969-04-26 | 6 | 7 |
| May | 253.3 | 13.3 | 1969-05-13 | 6 | 6 |
| June | 182.2 | 14.6 | 1969-06-09 | 10 | 4 |
| July | 262.9 | 14.5 | 1969-07-15 | 6 | 6 |
| August | 186.1 | 12.1 | 1969-08-06 | 9 | 3 |
| September | 146.0 | 10.3 | 1969-09-07 | 12 | 2 |
| October | 174.7 | 9.5 | 1969-10-05 | 7 | 5 |
| November | 87.6 | 8.9 | 1969-11-02 | 14 | 1 |
| December | 22.5 | 5.0 | 1969-12-17 | 25 | 0 |